Class 10 NTSE Delhi - Question Papers SAT 2019-20

 Page 1


 
  
 
NTSE STAGE – I (DELHI STATE) 
05 – A (2019 – 20)  
 (For Class – X) 
SCHOLASTIC APTITUDE TEST 
 
QUESTION PAPER 
 
101. A bomb of Mass 30 kg at rest explodes into two pieces of masses 18 kg and 12 kg. The 
velocity of 18 kg mass is 6 m/s. The kinetic energy of the other mass is. 
 (1) 324 J (2) 486 J 
 (3) 256 J (4) 524 J 
 
102. A body initialy at rest start moving when a constant external force F is applied on it. The 
force F is applied for time t = 0 to time t = T. Which of the following graph represents the 
variation of the speed (v) of the body with time (t) 
1. 
 
 
(2) 
 
 
(3) 
 
(4) 
 
 
103. A person can not clearly see objects at a distance more than 40 cm. He is advised to use 
lens of power 
 (1) –2.5D (2)2.5D 
 (3) –1.5D (4) 1.5D 
 
104. Gravitational force is essentially required for 
 (1) Stirring in liquid  (2)Convection 
 (3) Conduction (4) Radiation 
 
105. An observer moves towards a stationary plane mirror at a speed of 4 m/s the speed with 
which his image move towards him? 
 (1) 2 m/s (2) 4 m/s 
 (3) 8 m/s (4) Image will stay at rest 
  
106. If the ammeter in the given circuit reads 2 A, What is the value of resistance R (the 
resistance of ammeter is negligible). 
Page 2


 
  
 
NTSE STAGE – I (DELHI STATE) 
05 – A (2019 – 20)  
 (For Class – X) 
SCHOLASTIC APTITUDE TEST 
 
QUESTION PAPER 
 
101. A bomb of Mass 30 kg at rest explodes into two pieces of masses 18 kg and 12 kg. The 
velocity of 18 kg mass is 6 m/s. The kinetic energy of the other mass is. 
 (1) 324 J (2) 486 J 
 (3) 256 J (4) 524 J 
 
102. A body initialy at rest start moving when a constant external force F is applied on it. The 
force F is applied for time t = 0 to time t = T. Which of the following graph represents the 
variation of the speed (v) of the body with time (t) 
1. 
 
 
(2) 
 
 
(3) 
 
(4) 
 
 
103. A person can not clearly see objects at a distance more than 40 cm. He is advised to use 
lens of power 
 (1) –2.5D (2)2.5D 
 (3) –1.5D (4) 1.5D 
 
104. Gravitational force is essentially required for 
 (1) Stirring in liquid  (2)Convection 
 (3) Conduction (4) Radiation 
 
105. An observer moves towards a stationary plane mirror at a speed of 4 m/s the speed with 
which his image move towards him? 
 (1) 2 m/s (2) 4 m/s 
 (3) 8 m/s (4) Image will stay at rest 
  
106. If the ammeter in the given circuit reads 2 A, What is the value of resistance R (the 
resistance of ammeter is negligible). 
 
  
 
 
 (1)1 ? (2) 2 ? 
 (3) 3 ? (4) 4 ? 
 
107. A particle starts its motion from rest under the action of a constant force. If the distance 
covered in first 10 seconds is S
1
 and that covered in next 10 seconds is S
2
 then 
 (1) S
2
 = 6 S
1
 (2) S
2
 = 2 S
1 
 
(3) S
2
 = 8 S
1
 (4) S
2
 = 3 S
1 
 
108. Two planets of radii r
1
 and r
2
 are made from the same material having same density. The 
ratio of acceleration due to gravity g
1
|g
2
 at the surfaces of the planets is  
 (1) r
1
|r
2
 (2) r
2
|r
1 
 
(3) (r
1
|r
2
)
2 
(4) (r
2
|r
1
)
2
 
 
109. A concave mirror of focal length 15cm forms an image. The position of the object when the 
image is virtual and linear magnification is 2 is. 
 (1) 22.5 cm (2) 7.5 cm 
 (3) 30 cm (4) 45 cm 
 
110. A body on an inclined plane slides down 
1
th
4
of distance in 2 seconds. It will slide down the 
complete distance along the plane in (the inclined plane have zero friction) – 
 (1) 4 s (2) 5 s 
 (3) 2 s (4) 3 s 
 
111. When four equal resistors are connected in series with a battery they dissipate power of 
10W. The power dissipated through any of them if connected across the same battery will 
be- 
 (1) 40 W (2) 10/3 W 
 (3) 90 W (4) 10 W 
 
112. An electron move with velocity v in a uniform magnetic field B. The magnetic force 
experienced by the electron is 
 (1) always zero  (2) Never zero 
 (3) zero if v is perpendicular to B (4) zero if v is parallel to B 
 
113. In the given circuit the voltmeter reads 5V. The resistance of the voltmeter in Ohm is. 
 
 (1) 200 (2) 100 
 (3) 10 (4) 50 
 
114. Which of the following contain seven molecules of water of crystallization? 
 (1) Epsom salt (2) Green vitriol 
 (3) Blue vitriol  (4) White vitriol 
 
Page 3


 
  
 
NTSE STAGE – I (DELHI STATE) 
05 – A (2019 – 20)  
 (For Class – X) 
SCHOLASTIC APTITUDE TEST 
 
QUESTION PAPER 
 
101. A bomb of Mass 30 kg at rest explodes into two pieces of masses 18 kg and 12 kg. The 
velocity of 18 kg mass is 6 m/s. The kinetic energy of the other mass is. 
 (1) 324 J (2) 486 J 
 (3) 256 J (4) 524 J 
 
102. A body initialy at rest start moving when a constant external force F is applied on it. The 
force F is applied for time t = 0 to time t = T. Which of the following graph represents the 
variation of the speed (v) of the body with time (t) 
1. 
 
 
(2) 
 
 
(3) 
 
(4) 
 
 
103. A person can not clearly see objects at a distance more than 40 cm. He is advised to use 
lens of power 
 (1) –2.5D (2)2.5D 
 (3) –1.5D (4) 1.5D 
 
104. Gravitational force is essentially required for 
 (1) Stirring in liquid  (2)Convection 
 (3) Conduction (4) Radiation 
 
105. An observer moves towards a stationary plane mirror at a speed of 4 m/s the speed with 
which his image move towards him? 
 (1) 2 m/s (2) 4 m/s 
 (3) 8 m/s (4) Image will stay at rest 
  
106. If the ammeter in the given circuit reads 2 A, What is the value of resistance R (the 
resistance of ammeter is negligible). 
 
  
 
 
 (1)1 ? (2) 2 ? 
 (3) 3 ? (4) 4 ? 
 
107. A particle starts its motion from rest under the action of a constant force. If the distance 
covered in first 10 seconds is S
1
 and that covered in next 10 seconds is S
2
 then 
 (1) S
2
 = 6 S
1
 (2) S
2
 = 2 S
1 
 
(3) S
2
 = 8 S
1
 (4) S
2
 = 3 S
1 
 
108. Two planets of radii r
1
 and r
2
 are made from the same material having same density. The 
ratio of acceleration due to gravity g
1
|g
2
 at the surfaces of the planets is  
 (1) r
1
|r
2
 (2) r
2
|r
1 
 
(3) (r
1
|r
2
)
2 
(4) (r
2
|r
1
)
2
 
 
109. A concave mirror of focal length 15cm forms an image. The position of the object when the 
image is virtual and linear magnification is 2 is. 
 (1) 22.5 cm (2) 7.5 cm 
 (3) 30 cm (4) 45 cm 
 
110. A body on an inclined plane slides down 
1
th
4
of distance in 2 seconds. It will slide down the 
complete distance along the plane in (the inclined plane have zero friction) – 
 (1) 4 s (2) 5 s 
 (3) 2 s (4) 3 s 
 
111. When four equal resistors are connected in series with a battery they dissipate power of 
10W. The power dissipated through any of them if connected across the same battery will 
be- 
 (1) 40 W (2) 10/3 W 
 (3) 90 W (4) 10 W 
 
112. An electron move with velocity v in a uniform magnetic field B. The magnetic force 
experienced by the electron is 
 (1) always zero  (2) Never zero 
 (3) zero if v is perpendicular to B (4) zero if v is parallel to B 
 
113. In the given circuit the voltmeter reads 5V. The resistance of the voltmeter in Ohm is. 
 
 (1) 200 (2) 100 
 (3) 10 (4) 50 
 
114. Which of the following contain seven molecules of water of crystallization? 
 (1) Epsom salt (2) Green vitriol 
 (3) Blue vitriol  (4) White vitriol 
 
 
  
 
115. Which elements are used for galvanization? 
 (1) Zn and Sn (2) Na and K 
 (3) Cu and Fe (4) Ca and Mg 
 
116. Ramesh dropped a metal piece ‘A’ in the solution of another metal ‘M’. After some time a 
new colourless compound ‘N’ is formed. A, M, N respectively can be 
 (1) Mg, NaCl, MgCl
2
 (2) Fe, ZnSO
4
, FeSO
4
 
 (3) Zn, CuSO
4
, ZnSO
4
 (4) Cu, ZnSO
4
, CuSO
4
 
 
117. Which fuel has highest calorific value? 
 (1) LPG (2) Petrol 
 (3) CNG (4) Hydrogen 
 
118. The pH of acid rain is  
 (1) less than 5.6 (2) more than 5.6 
 (3) equal to 5.6 (4) more than 6.6 
 
119. IUPAC name of the following compound will be  
CH
3
  - C -  CH
2
 -  CH
2
 -  CH
2
 -  COOH 
O
 
 (1) 2-Keto hexan – 6 oic acid (2) 5 – Keto hexanoic acid 
 (3) Methyl Ketone butanoic acid (4) 5 – Aldo hexanoic acid 
 
120. Products obtained on electrolysis of brine are 
 (1) NaHCO
3
, H
2
, Cl
2
 (2) H
2
, NaOH, NaHCO
3 
 (3) Cl
2
, NaOH, Na
2
O
2
 (4) NaOH, H
2
, Cl
2 
 
121. In balanced chemical equation 
 ? ?
4 24 24 4 2
aKMnO bH SO cK SO dMnSO eH O f O ? ?? ? ? ? ? 
 Which of the following alternative are correct?  
 (1) a = 2, b = 3, c = 1, d = 2, e = 3, f = 5 (2) a = 1, b = 2, c = 1, d = 3, e = 2, f = 3 
 (3) a = 2, b = 3, c = 2, d = 3, e = 2, f = 5 (4) a = 3, b = 1, c = 3, d = 3, e = 1, f = 3 
 
122. Benzene(C
6
H
6
) have  
 (1) 12 covalent bonds (2) 15 covalent bonds 
 (3) 18 covalent bonds (4) 9 covalent bonds 
 
123. 1.0 Kg of Iron(Fe), having atomic mass equal to 56 g mol
–1
 contains 
 (1) 2.88 ? 10
24
 atoms  (2) 6.93 ? 10
23
 atoms 
 (3) 6.93 ? 10
21
 atoms (4) 1.075 ? 10
25
 atoms 
 
124. Aqueous solution of CsO
2
 is  
 (1) Basic (2) Neutral  
 (3) Acidic (4) Amphoteric 
 
125. A student added a drop of universal indicator to 1.00 mL of given solution and found that a 
green colour is produced, The pH value of the solution will be 
 (1) 7 – 9 (2) 0 – 3 
 (3) 10 – 12 (4) 4 – 6 
 
126. Elements present in any group have the same number of  
 (1) valence electrons (2) neutrons 
 (3) protons (4) none of the above 
 
Page 4


 
  
 
NTSE STAGE – I (DELHI STATE) 
05 – A (2019 – 20)  
 (For Class – X) 
SCHOLASTIC APTITUDE TEST 
 
QUESTION PAPER 
 
101. A bomb of Mass 30 kg at rest explodes into two pieces of masses 18 kg and 12 kg. The 
velocity of 18 kg mass is 6 m/s. The kinetic energy of the other mass is. 
 (1) 324 J (2) 486 J 
 (3) 256 J (4) 524 J 
 
102. A body initialy at rest start moving when a constant external force F is applied on it. The 
force F is applied for time t = 0 to time t = T. Which of the following graph represents the 
variation of the speed (v) of the body with time (t) 
1. 
 
 
(2) 
 
 
(3) 
 
(4) 
 
 
103. A person can not clearly see objects at a distance more than 40 cm. He is advised to use 
lens of power 
 (1) –2.5D (2)2.5D 
 (3) –1.5D (4) 1.5D 
 
104. Gravitational force is essentially required for 
 (1) Stirring in liquid  (2)Convection 
 (3) Conduction (4) Radiation 
 
105. An observer moves towards a stationary plane mirror at a speed of 4 m/s the speed with 
which his image move towards him? 
 (1) 2 m/s (2) 4 m/s 
 (3) 8 m/s (4) Image will stay at rest 
  
106. If the ammeter in the given circuit reads 2 A, What is the value of resistance R (the 
resistance of ammeter is negligible). 
 
  
 
 
 (1)1 ? (2) 2 ? 
 (3) 3 ? (4) 4 ? 
 
107. A particle starts its motion from rest under the action of a constant force. If the distance 
covered in first 10 seconds is S
1
 and that covered in next 10 seconds is S
2
 then 
 (1) S
2
 = 6 S
1
 (2) S
2
 = 2 S
1 
 
(3) S
2
 = 8 S
1
 (4) S
2
 = 3 S
1 
 
108. Two planets of radii r
1
 and r
2
 are made from the same material having same density. The 
ratio of acceleration due to gravity g
1
|g
2
 at the surfaces of the planets is  
 (1) r
1
|r
2
 (2) r
2
|r
1 
 
(3) (r
1
|r
2
)
2 
(4) (r
2
|r
1
)
2
 
 
109. A concave mirror of focal length 15cm forms an image. The position of the object when the 
image is virtual and linear magnification is 2 is. 
 (1) 22.5 cm (2) 7.5 cm 
 (3) 30 cm (4) 45 cm 
 
110. A body on an inclined plane slides down 
1
th
4
of distance in 2 seconds. It will slide down the 
complete distance along the plane in (the inclined plane have zero friction) – 
 (1) 4 s (2) 5 s 
 (3) 2 s (4) 3 s 
 
111. When four equal resistors are connected in series with a battery they dissipate power of 
10W. The power dissipated through any of them if connected across the same battery will 
be- 
 (1) 40 W (2) 10/3 W 
 (3) 90 W (4) 10 W 
 
112. An electron move with velocity v in a uniform magnetic field B. The magnetic force 
experienced by the electron is 
 (1) always zero  (2) Never zero 
 (3) zero if v is perpendicular to B (4) zero if v is parallel to B 
 
113. In the given circuit the voltmeter reads 5V. The resistance of the voltmeter in Ohm is. 
 
 (1) 200 (2) 100 
 (3) 10 (4) 50 
 
114. Which of the following contain seven molecules of water of crystallization? 
 (1) Epsom salt (2) Green vitriol 
 (3) Blue vitriol  (4) White vitriol 
 
 
  
 
115. Which elements are used for galvanization? 
 (1) Zn and Sn (2) Na and K 
 (3) Cu and Fe (4) Ca and Mg 
 
116. Ramesh dropped a metal piece ‘A’ in the solution of another metal ‘M’. After some time a 
new colourless compound ‘N’ is formed. A, M, N respectively can be 
 (1) Mg, NaCl, MgCl
2
 (2) Fe, ZnSO
4
, FeSO
4
 
 (3) Zn, CuSO
4
, ZnSO
4
 (4) Cu, ZnSO
4
, CuSO
4
 
 
117. Which fuel has highest calorific value? 
 (1) LPG (2) Petrol 
 (3) CNG (4) Hydrogen 
 
118. The pH of acid rain is  
 (1) less than 5.6 (2) more than 5.6 
 (3) equal to 5.6 (4) more than 6.6 
 
119. IUPAC name of the following compound will be  
CH
3
  - C -  CH
2
 -  CH
2
 -  CH
2
 -  COOH 
O
 
 (1) 2-Keto hexan – 6 oic acid (2) 5 – Keto hexanoic acid 
 (3) Methyl Ketone butanoic acid (4) 5 – Aldo hexanoic acid 
 
120. Products obtained on electrolysis of brine are 
 (1) NaHCO
3
, H
2
, Cl
2
 (2) H
2
, NaOH, NaHCO
3 
 (3) Cl
2
, NaOH, Na
2
O
2
 (4) NaOH, H
2
, Cl
2 
 
121. In balanced chemical equation 
 ? ?
4 24 24 4 2
aKMnO bH SO cK SO dMnSO eH O f O ? ?? ? ? ? ? 
 Which of the following alternative are correct?  
 (1) a = 2, b = 3, c = 1, d = 2, e = 3, f = 5 (2) a = 1, b = 2, c = 1, d = 3, e = 2, f = 3 
 (3) a = 2, b = 3, c = 2, d = 3, e = 2, f = 5 (4) a = 3, b = 1, c = 3, d = 3, e = 1, f = 3 
 
122. Benzene(C
6
H
6
) have  
 (1) 12 covalent bonds (2) 15 covalent bonds 
 (3) 18 covalent bonds (4) 9 covalent bonds 
 
123. 1.0 Kg of Iron(Fe), having atomic mass equal to 56 g mol
–1
 contains 
 (1) 2.88 ? 10
24
 atoms  (2) 6.93 ? 10
23
 atoms 
 (3) 6.93 ? 10
21
 atoms (4) 1.075 ? 10
25
 atoms 
 
124. Aqueous solution of CsO
2
 is  
 (1) Basic (2) Neutral  
 (3) Acidic (4) Amphoteric 
 
125. A student added a drop of universal indicator to 1.00 mL of given solution and found that a 
green colour is produced, The pH value of the solution will be 
 (1) 7 – 9 (2) 0 – 3 
 (3) 10 – 12 (4) 4 – 6 
 
126. Elements present in any group have the same number of  
 (1) valence electrons (2) neutrons 
 (3) protons (4) none of the above 
 
 
  
 
127. Which of the following reactions takes place during break down of molecules in the 
respiration in our body? 
 (1) Oxidation  (2) Reduction 
 (3) Oxidation-reduction (4) Photo-oxidation 
 
128. Lactic acid is produced when pyruvate is broken down. 
 (1) in presence of oxygen in mitochondria (2) in absence of oxygen in mitochondria 
 (3) in presence of oxygen in muscle cells (4) in absence of oxygen in muscle cells 
 
129. Separation of oxygenated and deoxygenated blood. 
 I. Fulfils energy requirement of the body 
 II. Ensures the effect transfer of oxygen in the body 
 (1) Both statements are true  
 (2) Statement I is true but statement II is false 
 (3) Statement I is false but statement II is true  
 (4) Both the statements are false 
 
130. Root pressure is effective way transporting water in xylem. This pressure is generated 
 (1)  in bright sunlight (2) during night 
 (3) at very low temperature (4) in high trees 
 
131. Choose the correct option to complete ‘A’, ‘B’, ‘C’ and ‘D’ in the following table. 
Hormone Function 
A Stimulates growth in all organs 
B Stimulates igituitary to release growth hormone 
C Controls blood sugar level 
D Regulates carbohydrate metabolism 
 (1) A – Insulin, B – Thyroxine, C – Growth hormone, D – Growth hormone release factor  
 (2) A – Growth hormone, B – Insulin, C – Thyroxine, D – Growth hormone release factor 
 (3) A – Thyroxine, B – Insulin, C – Growth hormone, D – Growth hormone release factor  
 (4) A – Growth hormone, B – Growth hormone release factor, C – Insulin, D – Thyroxine 
 
132. If a pea plant with wrinkled seeds and heterozygous tall plants were self pollinated, what will 
be the phenotypes of plants of F
2
 generation.  
 (1) 75% plants will be tall and have wrinkled seeds and other 25% will be dwarf with 
wrinkled seeds. 
 (2) 50% plants will be tall and have wrinkled seeds and other 50% will be dwarf with 
wrinkled seeds. 
 (3) 50% plants will be tall and have wrinkled seed and other 50% will be dwarf with round 
seeds.  
 (4) 25% plants will be tall and have wrinkled seed and other 75% will be dwarf with wrinkled 
seeds. 
 
133. Two similar pea plants are growing in two different islands separated by a vast ocean. The 
phenomenon of geographical isolation will 
 (1) not be seen as the plants get self pollinated 
 (2) be seen as the plants are growing in isolated regions 
 (3) not be seen as the plants get pollinated by ocean water currents  
 (4) be seen as the plants do not get pollinated and reproduces asexually 
 
134. DDT is non-biodegradable chemical when it enters food chain it gets accumulated in each 
tropical level. The phenomenon is called as  
 (1) Eutrophication (2) Chemical amplification  
 (3) Biomagnification (4) Chemical magnification 
 
Page 5


 
  
 
NTSE STAGE – I (DELHI STATE) 
05 – A (2019 – 20)  
 (For Class – X) 
SCHOLASTIC APTITUDE TEST 
 
QUESTION PAPER 
 
101. A bomb of Mass 30 kg at rest explodes into two pieces of masses 18 kg and 12 kg. The 
velocity of 18 kg mass is 6 m/s. The kinetic energy of the other mass is. 
 (1) 324 J (2) 486 J 
 (3) 256 J (4) 524 J 
 
102. A body initialy at rest start moving when a constant external force F is applied on it. The 
force F is applied for time t = 0 to time t = T. Which of the following graph represents the 
variation of the speed (v) of the body with time (t) 
1. 
 
 
(2) 
 
 
(3) 
 
(4) 
 
 
103. A person can not clearly see objects at a distance more than 40 cm. He is advised to use 
lens of power 
 (1) –2.5D (2)2.5D 
 (3) –1.5D (4) 1.5D 
 
104. Gravitational force is essentially required for 
 (1) Stirring in liquid  (2)Convection 
 (3) Conduction (4) Radiation 
 
105. An observer moves towards a stationary plane mirror at a speed of 4 m/s the speed with 
which his image move towards him? 
 (1) 2 m/s (2) 4 m/s 
 (3) 8 m/s (4) Image will stay at rest 
  
106. If the ammeter in the given circuit reads 2 A, What is the value of resistance R (the 
resistance of ammeter is negligible). 
 
  
 
 
 (1)1 ? (2) 2 ? 
 (3) 3 ? (4) 4 ? 
 
107. A particle starts its motion from rest under the action of a constant force. If the distance 
covered in first 10 seconds is S
1
 and that covered in next 10 seconds is S
2
 then 
 (1) S
2
 = 6 S
1
 (2) S
2
 = 2 S
1 
 
(3) S
2
 = 8 S
1
 (4) S
2
 = 3 S
1 
 
108. Two planets of radii r
1
 and r
2
 are made from the same material having same density. The 
ratio of acceleration due to gravity g
1
|g
2
 at the surfaces of the planets is  
 (1) r
1
|r
2
 (2) r
2
|r
1 
 
(3) (r
1
|r
2
)
2 
(4) (r
2
|r
1
)
2
 
 
109. A concave mirror of focal length 15cm forms an image. The position of the object when the 
image is virtual and linear magnification is 2 is. 
 (1) 22.5 cm (2) 7.5 cm 
 (3) 30 cm (4) 45 cm 
 
110. A body on an inclined plane slides down 
1
th
4
of distance in 2 seconds. It will slide down the 
complete distance along the plane in (the inclined plane have zero friction) – 
 (1) 4 s (2) 5 s 
 (3) 2 s (4) 3 s 
 
111. When four equal resistors are connected in series with a battery they dissipate power of 
10W. The power dissipated through any of them if connected across the same battery will 
be- 
 (1) 40 W (2) 10/3 W 
 (3) 90 W (4) 10 W 
 
112. An electron move with velocity v in a uniform magnetic field B. The magnetic force 
experienced by the electron is 
 (1) always zero  (2) Never zero 
 (3) zero if v is perpendicular to B (4) zero if v is parallel to B 
 
113. In the given circuit the voltmeter reads 5V. The resistance of the voltmeter in Ohm is. 
 
 (1) 200 (2) 100 
 (3) 10 (4) 50 
 
114. Which of the following contain seven molecules of water of crystallization? 
 (1) Epsom salt (2) Green vitriol 
 (3) Blue vitriol  (4) White vitriol 
 
 
  
 
115. Which elements are used for galvanization? 
 (1) Zn and Sn (2) Na and K 
 (3) Cu and Fe (4) Ca and Mg 
 
116. Ramesh dropped a metal piece ‘A’ in the solution of another metal ‘M’. After some time a 
new colourless compound ‘N’ is formed. A, M, N respectively can be 
 (1) Mg, NaCl, MgCl
2
 (2) Fe, ZnSO
4
, FeSO
4
 
 (3) Zn, CuSO
4
, ZnSO
4
 (4) Cu, ZnSO
4
, CuSO
4
 
 
117. Which fuel has highest calorific value? 
 (1) LPG (2) Petrol 
 (3) CNG (4) Hydrogen 
 
118. The pH of acid rain is  
 (1) less than 5.6 (2) more than 5.6 
 (3) equal to 5.6 (4) more than 6.6 
 
119. IUPAC name of the following compound will be  
CH
3
  - C -  CH
2
 -  CH
2
 -  CH
2
 -  COOH 
O
 
 (1) 2-Keto hexan – 6 oic acid (2) 5 – Keto hexanoic acid 
 (3) Methyl Ketone butanoic acid (4) 5 – Aldo hexanoic acid 
 
120. Products obtained on electrolysis of brine are 
 (1) NaHCO
3
, H
2
, Cl
2
 (2) H
2
, NaOH, NaHCO
3 
 (3) Cl
2
, NaOH, Na
2
O
2
 (4) NaOH, H
2
, Cl
2 
 
121. In balanced chemical equation 
 ? ?
4 24 24 4 2
aKMnO bH SO cK SO dMnSO eH O f O ? ?? ? ? ? ? 
 Which of the following alternative are correct?  
 (1) a = 2, b = 3, c = 1, d = 2, e = 3, f = 5 (2) a = 1, b = 2, c = 1, d = 3, e = 2, f = 3 
 (3) a = 2, b = 3, c = 2, d = 3, e = 2, f = 5 (4) a = 3, b = 1, c = 3, d = 3, e = 1, f = 3 
 
122. Benzene(C
6
H
6
) have  
 (1) 12 covalent bonds (2) 15 covalent bonds 
 (3) 18 covalent bonds (4) 9 covalent bonds 
 
123. 1.0 Kg of Iron(Fe), having atomic mass equal to 56 g mol
–1
 contains 
 (1) 2.88 ? 10
24
 atoms  (2) 6.93 ? 10
23
 atoms 
 (3) 6.93 ? 10
21
 atoms (4) 1.075 ? 10
25
 atoms 
 
124. Aqueous solution of CsO
2
 is  
 (1) Basic (2) Neutral  
 (3) Acidic (4) Amphoteric 
 
125. A student added a drop of universal indicator to 1.00 mL of given solution and found that a 
green colour is produced, The pH value of the solution will be 
 (1) 7 – 9 (2) 0 – 3 
 (3) 10 – 12 (4) 4 – 6 
 
126. Elements present in any group have the same number of  
 (1) valence electrons (2) neutrons 
 (3) protons (4) none of the above 
 
 
  
 
127. Which of the following reactions takes place during break down of molecules in the 
respiration in our body? 
 (1) Oxidation  (2) Reduction 
 (3) Oxidation-reduction (4) Photo-oxidation 
 
128. Lactic acid is produced when pyruvate is broken down. 
 (1) in presence of oxygen in mitochondria (2) in absence of oxygen in mitochondria 
 (3) in presence of oxygen in muscle cells (4) in absence of oxygen in muscle cells 
 
129. Separation of oxygenated and deoxygenated blood. 
 I. Fulfils energy requirement of the body 
 II. Ensures the effect transfer of oxygen in the body 
 (1) Both statements are true  
 (2) Statement I is true but statement II is false 
 (3) Statement I is false but statement II is true  
 (4) Both the statements are false 
 
130. Root pressure is effective way transporting water in xylem. This pressure is generated 
 (1)  in bright sunlight (2) during night 
 (3) at very low temperature (4) in high trees 
 
131. Choose the correct option to complete ‘A’, ‘B’, ‘C’ and ‘D’ in the following table. 
Hormone Function 
A Stimulates growth in all organs 
B Stimulates igituitary to release growth hormone 
C Controls blood sugar level 
D Regulates carbohydrate metabolism 
 (1) A – Insulin, B – Thyroxine, C – Growth hormone, D – Growth hormone release factor  
 (2) A – Growth hormone, B – Insulin, C – Thyroxine, D – Growth hormone release factor 
 (3) A – Thyroxine, B – Insulin, C – Growth hormone, D – Growth hormone release factor  
 (4) A – Growth hormone, B – Growth hormone release factor, C – Insulin, D – Thyroxine 
 
132. If a pea plant with wrinkled seeds and heterozygous tall plants were self pollinated, what will 
be the phenotypes of plants of F
2
 generation.  
 (1) 75% plants will be tall and have wrinkled seeds and other 25% will be dwarf with 
wrinkled seeds. 
 (2) 50% plants will be tall and have wrinkled seeds and other 50% will be dwarf with 
wrinkled seeds. 
 (3) 50% plants will be tall and have wrinkled seed and other 50% will be dwarf with round 
seeds.  
 (4) 25% plants will be tall and have wrinkled seed and other 75% will be dwarf with wrinkled 
seeds. 
 
133. Two similar pea plants are growing in two different islands separated by a vast ocean. The 
phenomenon of geographical isolation will 
 (1) not be seen as the plants get self pollinated 
 (2) be seen as the plants are growing in isolated regions 
 (3) not be seen as the plants get pollinated by ocean water currents  
 (4) be seen as the plants do not get pollinated and reproduces asexually 
 
134. DDT is non-biodegradable chemical when it enters food chain it gets accumulated in each 
tropical level. The phenomenon is called as  
 (1) Eutrophication (2) Chemical amplification  
 (3) Biomagnification (4) Chemical magnification 
 
 
  
 
135. Presence of _______ is an indicator of pollution level in water 
 (1) Colour (2) Coliform bacteria 
 (3) Rhizo bacteria (4) Spiral bacteria 
 
136. Leaves of tendu are the source of income of large number of people of India. These leaves 
are used to make 
 (1) thatched roofs (2) bidis 
 (3) leaf plates (4) teetch cleaning agent 
 
137. Maximum number of trophic levels supported in any ecosystem is  
 (1) one  (2) two  
 (3) three (4) four 
 
138. Correct sequence of reflex arc is 
 (1) Receptor ? Motor Neuron ? Sensory Neuron ? Effector organ ? Relay Neuron  
 (2) Receptor ? Sensory Neuron ? Motor Neuron ? Effector organ ? Relay Neuron 
 (3) Receptor ? Sensory Neuron ? Motor Neuron ? Relay Neuron ? Effector organ  
 (4) Receptor ? Sensory Neuron ? Relay Neuron ? Motor Neuron ? Effector organ  
 
139. Tricuspid valve is present in  
 (1) right atria and right ventricle (2) left atria and left ventricle 
 (3) wall of atrium (4) wall of ventricle 
 
140. BCG vaccine provide protection against 
 (1) measles (2) T.B 
 (3) cholera (4) small pox 
 
141. Find the area of the square ABCD.  
 (1) 160 m
2
   (2) 140 m
2 
 (3) 125 m
2
 (4) 120 m
2 
 
 D C 
A B 
10 cm 
6 cm 
8 cm 
 
142. If 
? ? ? ? ? ?
3 3 3
x x x x
24 4 2 42 6 ?? ?? ? ? , then the sum of all real values of x is  
 (1) 0.5   (2) 1.5 
 (3) 2.5 (4) 3.5 
 
143. If 
x x
2019 2019 3
?
? ? , then the value of 
6x 6x
x x
2019 2019
2019 2019
?
?
?
?
 is:  
 (1) 3   (2) 6 
 (3) 9 (4) 12 
 
144. Let ‘p’ be a root of the equation 
2
x 5x 7 0 ? ? ? , then the area of circle with centre at (p, p) 
and passing through point (1, 4) is  
 (1) 3 ? sq. units    (2) 5 ? sq. units  
 (3) 7 ? sq. units  (4) None of these